Vento zipr3i, Service Manual

Page: 59 / 85

Rev 01/ page112 of 143
FUEL LEVEL GAUGE
INSPECTION OF FUEL LEVEL GAUGE
The two different checks to be used for inspection of fuel level gauge.
The first and simplest test will tell if the meter is Operating but will not indicate the meters
accuracy throughout the range. To perform the test, lift the seat and remove the
Right frame cover, then disconnect the B/W and Y/B lead Connector of the fuel gauge-sending
unit. Connect a jumper Wire between B/M and Y/B wires coming from the main wiring harness,
the ignition switched ON, the fuel meter should indicate F .
The second test will check the accuracy of the meter in the full and empty positions.Connect a 90-
ohm resistor between the Y/B and B/W lead wires.The fuel meter is normal if it s pointer indicates
the E(empty) position when the
specified voltage is applied to the circuit and if it s pointer indicates the F(full) position when the
resistor is changed to 10 ohms.If either one or both indications are
abnormal,replace the fuel gauge with a new one.
FUEL GAUGE SENDING UNIT INSPECTION
Disconnect the lead wires coming out of the fuel gauge and check resistance of each position. If
the resistance measured is incorrect, replace the fuel gauge assembly with a new one.
Resistance is shown in the following table:
FLOAT POSITION RESISTANCE
F FULL
Approx.33
(HALF) Approx.200
E EMPTY
Approx.300
OIL LEVEL SWITCH INSPECTION
Check the oil level switch for continuity between the lead wires. If the tester does not show the value
of 1 ohm when the switch ring is in bottom position, file the contact surface or replace the unit.